<template>
    <view class="goods-item">
      <!-- 商品左侧图片区域 -->
      <view class="goods-item-left">
        <radio :checked="goods.goods_state" color="#C00000" v-if="showRadio" @click="radioClickHandler"></radio>
        <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
      </view>
      <!-- 商品右侧信息区域 -->
      <view class="goods-item-right">
        <!-- 商品标题 -->
        <view class="goods-name">{{goods.goods_name}}</view>
        <view class="goods-info-box">
          <!-- 商品价格 -->
          <view class="goods-price">￥{{tofixed(goods.goods_price)}}</view>
          <!-- 商品数量 -->
          <uni-number-box :min="1" :value="goods.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
        </view>
      </view>
    </view>
</template>
<script>
  export default {
    props: {
      goods: {
        type: Object,
        default: {},
      },
      //是否展示图片左侧的 radio
      showRadio: {
        type: Boolean,
        default: false, //默认不展示，外界手动展示
      },
      //是否展示价格右侧的 NumberBox 组件
      showNum: {
        type: Boolean,
        default: false,
      }
    },
    data() {
      return {
        // 默认的空图片
        defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
      }
    },
    methods: {
      tofixed(num) {
        return Number(num).toFixed(2)
      },
      radioClickHandler() {
        this.$emit('radio-change', {
          goods_id: this.goods.goods_id,
          goods_state: !this.goods.goods_state
        })
      },
      numChangeHandler(val) {
        this.$emit('num-change', {
          goods_id: this.goods.goods_id,
          //商品的最新数量
          goods_count: +val
        })
      }
    }
  }
</script>
<style lang="scss">
  .goods-item {
    //让 goods-item 项占满整个屏幕的宽度
    width: 750rpx;
    //设置盒模型为border-box
    box-sizing: border-box;
    display: flex;
    border-bottom: 1px solid #f0f0f0;
    padding: 10px 5px;
    .goods-item-left {
      margin-right: 5px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      .goods-pic {
        display:block;
        width: 100px;
        height: 100px;
      }
    }
    .goods-item-right {
      display: flex;
      flex: 1;
      flex-direction: column;
      justify-content: space-between;
      
      .goods-name {
        font-size: 13px;
      }
      .goods-info-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
        .goods-price {
          font-size: 16px;
          color: #c00000;
        }
      } 
    }
  }
</style>
